Yet another Quadruple DNS?

Michael Crapse michael at
Thu Mar 29 15:44:29 UTC 2018

Along these same lines, we have a service that captures all DNS requests
regardless the server(only non-TLS, albeit), that people pay $9.99/mo for,
so they definitely want this.. We just NAT all requests to Open DNS servers
to provide internet filtering as a service. It would be arbitrarily trivial
to run our own DNS service and reply to any unencrypted DNS request to any
DNS server with whatever A or AAAA record we want..

On 29 March 2018 at 09:29, Bill Woodcock <woody at> wrote:

> > \On Mar 29, 2018, at 7:27 AM, Brian Kantor <Brian at> wrote:
> >
> > On Thu, Mar 29, 2018 at 09:08:38AM -0500, Chris Adams wrote:
> >> I've never really understood this - if you don't trust your ISP's DNS,
> >> why would you trust them not to transparently intercept any well-known
> >> third-party DNS?
> >
> > Of course they could.  But it's testable; experiments show that they
> > aren't doing so currently.
> Experiments may show that in some tested cases they aren’t, but in the big
> picture, yes, there are ISPs who are internally capturing, and who
> try to do the same with  Which is why it’s so important to do
> cryptographic validation of the server and encryption of the transport, as
> well as DNSSEC validation.
>                                 -Bill

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